K00.4 – Disturbances in tooth formation
ICD-10-CM 2027 diagnosis code · Diseases of oral cavity and salivary glands
ICD-10-CM code
K00.4
- Code
K00.4(claims format:K004)- Description
- Disturbances in tooth formation
- Billable
- Yes – valid for HIPAA-covered transactions
- Valid for
- Dates of service October 1, 2026 – September 30, 2027 (FY2027)
- Chapter
- 11. Diseases of the digestive system (K00-K95)
- Block
- K00-K14 Diseases of oral cavity and salivary glands
- Parent codes
- K00
Notes for K00.4
Applicable to:
- Aplasia and hypoplasia of cementum
- Dilaceration of tooth
- Enamel hypoplasia (neonatal) (postnatal) (prenatal)
- Regional odontodysplasia
- Turner's tooth
Excludes1 (not coded here):
- Hutchinson's teeth and mulberry molars in congenital syphilis (A50.5)
Excludes2 (not included here):
- mottled teeth (K00.3)
Notes inherited from parent codes
Instructional notes at a category or block level apply to every code below it.
K00 – Disorders of tooth development and eruption
Excludes2 (not included here):
- embedded and impacted teeth (K01.-)
Index terms for K00.4
Entries in the ICD-10-CM alphabetic index that lead to this code:
- Ghost, teeth
- Pitting, teeth
- Turner's, tooth
- Aplasia, cementum
- Dilaceration, tooth
- Turner's, hypoplasia
- Odontodysplasia, regional
- Disturbance, tooth, formation
- Calcification, dentinal papilla
- Hypoplasia, hypoplastic, cementum
- Hypoplasia, hypoplastic, Turner's
- Amelogenesis imperfecta, nonhereditaria
- Hypoplasia, hypoplastic, enamel of teeth
Related codes in K00
- K00.0 – AnodontiaBillable
- K00.1 – Supernumerary teethBillable
- K00.2 – Abnormalities of size and form of teethBillable
- K00.3 – Mottled teethBillable
- K00.5 – Hereditary disturbances in tooth structure, not elsewhere classifiedBillable
- K00.6 – Disturbances in tooth eruptionBillable
- K00.7 – Teething syndromeBillable
- K00.8 – Other disorders of tooth developmentBillable
- K00.9 – Disorder of tooth development, unspecifiedBillable
Frequently asked questions
What is ICD-10 code K00.4?
K00.4 is the ICD-10-CM code for disturbances in tooth formation, in the block K00-K14 (Diseases of oral cavity and salivary glands).
Is K00.4 a billable code?
Yes. K00.4 is a billable/specific code that can be used to indicate a diagnosis for reimbursement purposes.
What category does K00.4 belong to?
It belongs to category K00 – Disorders of tooth development and eruption.
Source: CDC/NCHS ICD-10-CM FY2027 code files, tabular list and index. Reference only – code assignment must follow the official ICD-10-CM guidelines and documentation in the medical record.